Patents by Inventor Robert J. Trupin

Robert J. Trupin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Thermal engine
    Patent number: 4423596
    Abstract: A thermal engine utilizing a strip of nitinol material or other thermally responsive shape memory effect material to drive a reciprocating output shaft, said strip of material forming a common wall between two different alternating temperature sources which thermally cycle the material.
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: January 3, 1984
    Inventors: Thomas E. Karnes, Robert J. Trupin